I try to launch logstash pipeline for 3 configuration files (just duplication of conf file) but unfortunately, this leads to an indefinitely looping message :

Looping message without end

This is the command : (Only one conf file is executed, the other are never reached ! because of looping message )

bin/logstash -f /etc/logstash/conf.d/app1.conf -f /etc/logstash/conf.d/app2.conf -f /etc/logstash/conf.d/app3.conf --log.level debug

This is the log file : which seems correct because of the conf file is executed and ingest data on elasticsearch
Log capture

This is the sample logstash conf file :

input {
  file {
    path => "/home/app1/log_app1.log"
    start_position => "beginning"
    sincedb_path => "/dev/null"
 }
}

filter {
    grok{
       match => { "message" => "%{LOGLEVEL:log_level} %{GREEDYDATA:log_message}" }
       }
}

output {
  elasticsearch {
    hosts => ["localhost:9200"]
    index => "app1_data"
 }
  stdout { codec => rubydebug }
}

Finally, this is the sample log file :

INFO APP log message 01
ERROR APP log message 02
DEBUG APP log message 03
WARN APP log message 04

Indefinitely looping message blocking the execution of the seconde and third pipeline configuration file !